Method of manufacturing glass and compositions therefore
a manufacturing method and composition technology, applied in the field of products, can solve the problems of requiring the use of caustic soda, more expensive, and difficult control of the contact process between solids and molten materials, and achieve the effect of reducing the eutectic character of the total glass batch and effectively creating an inhomogeneity
Inactive Publication Date: 2008-06-10
SPECIALITY MINERALS (MICHIGAN) INC
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Benefits of technology
[0012]The present invention discloses a process that includes preferentially reacting a portion of a glass batch within the total glass batch. This preferential reaction is accomplished by reacting a solid state particle containing a portion of the total glass batch thus effectively creating an inhomogeneity in the total glass batch. The components reacted in this preferential reaction are exothermic in nature and effectively lower the eutectic character of the total glass batch.
Problems solved by technology
This process has the disadvantage of requiring the use of caustic soda, which is more costly than soda ash as a source of sodium for making glass.
Also, the process of contacting solids with molten material is more difficult to control and more prone to plugging than a solid state reaction.
Calcining requires temperatures in excess of 1600 degrees Fahrenheit (870 degrees Centigrade), which precludes treatment of the whole batch mixture because such temperatures would cause fusion of other constituents of the batch, particularly the soda ash or other soda source.
Method used
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example 1
[0029]A glass product is to have components of silicon, sodium, calcium, magnesium, measurable in equivalents as silica dioxide (SiO2), sodium oxide (Na2O), calcium oxide (CaO), and magnesium oxide (MgO). To supply the silicon component of the glass, a sand material is selected as a feed material. The sand has a size measurement of 30 mesh to 140 mesh. To supply the calcium and magnesium components to the glass batch, the solid state particle containing the magnesium, silica, and calcium components, agglomerated with water, dried, and screened, is added to the total glass batch. The agglomerated (solid state) particles contain silicon dioxide (SiO2), hydrated calcium oxide (Ca(OH)2), hydrated magnesium oxide (Mg(OH)2), periclase (MgO), and water. This agglomerated particle material is combined with the sand to be used in an amount to complete the total silicon value of the glass batch. Soda ash is added to supply the sodium value for the glass. Since the agglomerated particle does n...
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Abstract
The present invention relates to the production of glass. In particular, the present invention relates to a method for the production of glass utilizing processes of reacting materials in a glass furnace in either a batch mode or a continuous process. These reactions affect the thermodynamics and other characteristics of the glass-forming reaction. The present invention additionally relates to compositions which are useful in such reactions.
Description
FIELD OF THE INVENTION[0001]The present invention relates to a product, a process for its preparation, and the use of such product in glass. More particularly, the present invention relates to a process that produces a solid state particle that is particularly useful in the production of glass products, such as flat glass, fiberglass, container glass, lighting glass, tableware, and the like.BACKGROUND OF THE INVENTION[0002]Processes, and materials for such processes, for the manufacture of glass have millenniums of development. In particular, glass manufacturers have been, and continue to be, concerned with the components, thermodynamics and other characteristics of the glass-making reactions in glass furnaces. The glass reaction generally involves the reaction of materials to produce a composition containing the reacted and / or dispersed components of silica (silicon dioxide from sand, quartz and the like), soda ash (sodium carbonate), and lime (calcium oxide from quicklime, hydrate...
Claims
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IPC IPC(8): C03B3/00C01B33/26C03B1/02C03C1/02C03C6/00C03C6/08
CPCC03B1/02C03C1/026
Inventor HOCKMAN, JOHN ALBERT
Owner SPECIALITY MINERALS (MICHIGAN) INC